Section 21714 Of Article 2. Additional Driving Rules From California Vehicle Code >> Division 11. >> Chapter 3. >> Article 2.

. The driver of a vehicle described in subdivision (f) of Section 27803 shall not operate the vehicle in either of the following areas:
  (a) On, or immediately adjacent to, the striping or other markers designating adjacent traffic lanes.
  (b) Between two or more vehicles that are traveling in adjacent traffic lanes.